toepfee



(No Model.) 2 Sheets-Sheet 1..

W. TOEPPER. l MACHINE FOR BENDING ANGLE AND OTHER BARS.

(No Model.) 2 sheetssheet 2.

W. T0EPPER.

MACHINE FOR BENDING ANGLE-AND OTHER BARS.

No. 357,160. Patented Feb. 1,1887.

"n:|[| v E, lE ju if H l Ilil I VENZEL TOEPFER, OF MILVAKEE, TOEPFER & SONS,

PATENT rrrcie.

W'ISOONSIN, ASSIGNOR 'IO VENZFJL OF SAME PLACE.

AMACHINE FORBENDING ANGLE AND OTHERBARS.

SPECIFICATION forming part of Letters Patent No. 357,160, dated February l, 1887.

Application filed August 10l 1886.

.To all' whom it may concern;

Be it known that LWVENZEL TOEPFER, of Milwaukee, in the county of Milwaukee, and in the State of Wisconsin, have inventedrcertain new and useful Improvements in Machines for Bending Angle and other Bars, and I do hereby declare that the following is a full, clear, and exact description thereof.

My invention relates to amachine for bending angle and other bars; and it consists in certain peculiarities of construction, as will be hereinafter described with reference to the accompanying drawings, and subsequently claimed.

In the drawings, Figure l represents a top plan view of my machine; Fig. 2, a horizontal vertical'A` section on linea@ fr, Fig. I; Fig. 3,.a side elevation; Fig. 4, a plan viewof the front portion of the machine with the main operatin g-gear and central cover-plate removed; Fig. 5, an under side view of the central coverplate, and Fig. 6 a detail view of a pressureblock. i

Referring by letter to the drawings, A B represent the front and rear heads of my machine, each provided upon its under side with sleeves a b, through which are passed connecting-rods O, the latter being retained in position by suitable bolt-heads or nuts, c, and to these heads are bolted or otherwise suitably connected legs D. The front head, A, is integrally constructed with a right-angular box, E, that has a removable cover, E', the latter being provided upon its under side with-depending stops d e, while both the box and cover have perforated enlargements f g, that register one-with another, and through which are passed bolts h, to retain said cover i'n position with relation to the box.

`Ihe box and its cover are provided with bearings i i', for journals F G the one F having keyed thereto above said cover a pinion, H, and capstan-head I', while the one G carries a gear-wheel, Ii, arranged to mesh with said pinion.

Keyed to the journal G, inside the box E, is a lantern-wheel, L, that is arranged to engage a rack, r7c,`on a plunger, M, that operates in the part FP of the box E, and is provided with 5o aremovable block, N, thetrundles m of the lantern-wheel being loose in the heads n, so as lessening the friction.

Serial No. 210,525. (Elo model.)

to lessen the friction between said trundles and rack.

The stops d on the under side of the boxcover E lit in the corresponding part E2 of the box E, and by this construction I prevent contact of the plunger M with that portion of lsaid cover between these stops, thereby The front face, B, of the rear head, B, is arc-shaped, as shown in Fig. l, and, if desired, a series of heads having arcs of differing dimensions may accompany each machine. 'K

The block N on the plunger M must conform to the opposing part of the bar that is being bent, and for that reason the same is made removable; and in Fig. l Ishow aplain block operating against an angle-bar, while in Fig. 6 I show an angular block operating against a bar in a reversed position from the former.

In the operation of my invention the bar to be bent is laid upon the connecting-rods O, in

front of the rear head, B, (said bar being un.- heated,) as shown in dotted lines, Fig. 1. By operating the capstan-head I, by means of a handspilre, l?, the pinion II and gear-wheel K communicate motion to the lantern-wheel L, and the latter in turn actuates the plunger M to bring its block N against the bar and force the same in toward the arc-shaped face of head B. The bar is moved along and the above-described operation repeated until said bar has been bent to the desired curvature,` this curvature being varied accordingly as the bar is moved each time a greater or less distance.

Having thus fully described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a machine for bending angle and other bars, the combination, with a fixed head having an arc-shaped front face, of' a rack-plunger carrying a block in opposition tosaid arc-- face, a lantern-wheel having revolving trundles arranged to mesh with the rack on the plunger, and nieans,substantially as described, for operating said lantern-wheel, as set forth.

2. In a' machine for bending angle and other' bars, a front and rear head supported on suitable legs, the former head having a ri ght-angular box, the latter an arc-shaped front face,

IOC

and both provided with depending sleeves, in to the pinion-journal, all arranged to operate combination with braeerods passed through substantially as andi'or the purpose set forth. the sleeves to unite said heads, a raek-pluu- In testimony that I claim the foregoing I gel' Operative in the right-angular box and i have hereunto set my hand, at Milwaukee. in

5 carrying a removable head in opposition t0 the county of Milwaukee and State of Vis- 15 the arc-face of the rear head, a lantern-Wheel cousin, in the presence of two witnesses.

arranged to mesh with the rack 0h said pluu- XVENZEL TOEPFER. ger, a gear-Wheel on the saine journal With XVitnesses: said lantern-wheel, a pinion arranged to mesh H. G. UNDERWOOD,

ro with this gear-wl1eel,and a capstan-head keyed MAURICE F. FREAR. 

